Commitments and Contingencies - Narrative (Details) - USD ($)		3 Months Ended
	Feb. 06, 2019	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Other Commitments [Line Items]
Rent expense		$ 300,000	$ 300,000
Purchase commitments related to inventory		200,000		$ 400,000
Accrued litigation expense		3,200,000		$ 3,200,000
Statutory damages sought per violation of TCPA | Eric B Fromer Chiropractic Inc Class Action [Member]
Other Commitments [Line Items]
Damages sought	$ 500
Treble damages sought per violation of TCPA | Eric B Fromer Chiropractic Inc Class Action [Member]
Other Commitments [Line Items]
Damages sought	$ 1,500
Indemnification Agreement
Other Commitments [Line Items]
Costs to defend lawsuits or settle claims		0
Costs accrued to defend lawsuits		$ 0